the most commonly suggested workaround is to "hit record", but you know as well as i do, it's only an issue when it's already too late to "hit record" (watching live tv or switching tuners). i'm not about to hit "record" every time i change channels, it'd drive me nuts, plus i might tie up tuners needed for recording other shows.

there have been suggestions to have an adjustable buffer, the user could pick 30, 60, or 90 minutes. go to tivo.com, send feedback.

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The truth will set you free. But not until it is finished with you. - David Foster Wallace

I would also like to see the liveTV buffer to increase to 1 hour or at least be selectable.

One nice feature I noticed now that I have a RoamioPRO, if I select a channel in the guide and that channel is already showing on another tuner, the Roamio will switch tuners instead of switching channels on current tuner. (This may have always been the case, but only noticed when I had 6 tuners)
This is great for going to HGTV and then backing up to beginning of record buffer to start watching and be able to skip commercials.